Petrora

FORMATIONS · RRC WELLBORE FILE

Thomas Sand

Reported as a top in 2,033 wells across 11 counties, at a median depth of 1,228 ft (885 to 1,624 ft in most wells). 30 of those wells were permitted in the last three years.

A well counts if any of its completion filings report this formation, whether it produces from it or drilled through it. Depths are measured depth as filed; typo depths exist, which is why ranges are percentiles, not extremes. About completion reports →

2.03K
wells reporting a top
30
permitted in last 3 years
11
counties
1,228
median top, ft

COMPUTED OCT 29, 2026 · REBUILT DAILY

Depth by county

Counties with at least five wells reporting the top. Bars are well counts.

CountyWellsMedian, ftP10–P90Last 3 yrs
Wichita
819
1,4531,192–1,68411
Archer
767
1,112730–1,41017
Clay
328
1,1241,060–1,1702
Wilbarger
67
1,6801,626–1,7600
Young
25
902640–1,0040
Baylor
8
1,2521,180–1,5020
Montague
7
1,3901,058–1,4380
Colorado
6
2,3092,290–2,3300

Operators

Current operator of record for wells reporting the top, ranked by wells permitted in the last three years.

OperatorLast 3 yrsAll
Bridwell Oil Co.725
Newport Operating, LLC3110
Stone, Gregory W.36
Muirfield Exploration, Ltd.229
LMH Energy215
R2Q Operating LLC215
Willowbend Investments, Inc.28
True Wolf Operating, LLC26
Wolf, Gene L.L.C.18
Lewis Operating Company18
Myers, James B.15
JLW Operations, LLC13
Mercury Operating, LLC13
Mountain Creek Oil Company, Inc.11
Eagle Oil & Gas Co.11
Monroe Well Service, Inc.096
Atapco064
Bto Venture, Inc.062
Dym Energy, Inc.052
Hood, J. Frank, Jr.040
Texas Energy Operations, LC039
Berry Oil Company038
Banner Oil & Gas LLC037
Landrum West, Inc.032
Mobil Producing TX. & N.M. Inc.032

Recently permitted wells reporting the Thomas Sand

BY LAST PERMIT ISSUED

Last permitLeaseOperatorCountyTop, ftAPI
Jun 15, 2026Hull-Silk 4300' UnitMercury Operating, LLCArcher1,48600943127
Jun 12, 2026Horned FrogEagle Oil & Gas Co.Archer70000943432
Mar 6, 2026WestforkBridwell Oil Co.Archer85500943415
Oct 14, 2025Pace ANewport Operating, LLCWichita1,63848546417
Sep 10, 2025Hawley EstateWillowbend Investments, Inc.Archer67200905164
Sep 10, 2025Hawley EstateWillowbend Investments, Inc.Archer66800981478
Aug 11, 2025Stone RammingStone, Gregory W.Wichita52048544588
Aug 11, 2025SLC RammingStone, Gregory W.Wichita52048546413
Jul 14, 2025Bridwell Archer Ranch -D-Bridwell Oil Co.Archer83500943390
Mar 25, 2025Cole, T. J.True Wolf Operating, LLCWichita1,51048546405
Mar 3, 2025Lipscomb (Deep)Lewis Operating CompanyArcher89200942778
Jan 30, 2025JT ColeTrue Wolf Operating, LLCWichita1,51048546130
Jan 29, 2025Bridwell Archer Ranch -M-Bridwell Oil Co.Archer75000943377
Jan 7, 2025Waggoner, J & J Kma UnitR2Q Operating LLCWichita1,12548546318
Jan 3, 2025Bridwell Archer Ranch -D-Bridwell Oil Co.Archer83700943375
Jan 2, 2025Bridwell Archer Ranch -N-Bridwell Oil Co.Archer74600943374
Dec 4, 2024LMH Energy O'DonohoeLMH EnergyArcher1,18500931902
Oct 14, 2024GoseJLW Operations, LLCArcher1,37400943370
Oct 4, 2024Sauder BR2Q Operating LLCWichita1,78048546398
Jul 31, 2024Potts TwoMountain Creek Oil Company, Inc.Wichita1,33048546393
Jul 30, 2024Wolf HoeggerWolf, Gene L.L.C.Archer1,51000943365
Apr 10, 2024Bridwell Archer Ranch -N-Bridwell Oil Co.Archer75200943351
Apr 5, 2024WestforkBridwell Oil Co.Archer88500943352
Mar 15, 2024R. E. HarbisonMyers, James B.Archer1,32900943350
Feb 5, 2024SLC RammingStone, Gregory W.Wichita1,51048546384

About this data

Formation tops, elevations, perforations, and casing from the RRC dbf900 wellbore file, refreshed weekly, with reported names normalized to Petrora's formation registry. County and operator breakdowns are rebuilt nightly.

Developers: this page as JSON is GET /v1/data/formations/thomas-sand, documented in the API reference.